an7199z Panasonic Corporation of North America, an7199z Datasheet - Page 11

• Manufacturer Part Number: an7199z
• Description: Dual 20 W Btl Power Ic For Car Audio
• Manufacturer: Panasonic Corporation of North America

ICs for Audio Common Use
[2] Main characteristics (continued)
[3] Application note
1. Standby function
Technical Information (continued)
200
180
160
140
120
100
80
60
40
20
1) The power can be turned on or off by
2) The standby terminal has threshold
3) The internal circuit of standby terminal is as shown in figure 1. When the standby terminal is high, the current
4) A power supply with no ripple component should be used for the control voltage of standby terminal .
0
0.0
making pin 5 (standby terminal) high
or low.
voltage of approx. 2.1 V, however, it
has temperature dependency of
approx. 6 mV/ C. The recommended
range of use is shown in table 1.
approximately expressed by the following equation will flow into the circuit.
I
STB
1.0
Standby voltage V
V
I
CQ
2.0
STB
10 k
2.7 V
V
STB
3.0
STB
[mA]
(V)
V
R
R
4.0
L
g
CC
4
10 k
13.2 V
V
STB
5.0
5 V
0 V
Terminal state
Open
High
Low
5
Sub
250
200
150
100
100
150
200
250
50
50
0
10 k
0
Terminal voltage
Higher than 3 V
0 V to 1.0 V
5
Supply voltage V
Table 1
V
0 V
offset
RF
Figure 1
ch.1 mute on
2 k
10
V
ch.2 mute on
Protection
circuit
ch.2
ch.1
CC
CC
(V)
4 k
15
Operating state
Standby state
Standby state
R
R
L
g
Power
10 k
4
AN7199Z
Constant
current source
20
11